The man wasn't always a dog…even if he does have doggish-tendencies. Playing with a concept here…on the one hand, she snaps and becomes the Black Queen…on the other, she keeps it together, but slides down a long, dark slope.

Actually, I mostly find it interesting (if it plays out that way) that they knew each other before the Foundation. Or that it's a mutual "You got me into this!" "No, it's YOU'RE fault!" sort of thing. (And "Lean On Me" comes on with "…I just might have a problem that you'd understand…" as I type that…)

edit: …followed by Veteran Of The Psychic Wars whose entire lyrics are apropos of this story line…

Very few people snap all at once. The edges have to crumble first. The entire personality has to become friable. Then, given the correct (or incorrect) pressure, they can snap like a stale snickerdoodle, scattering crumbs of lost sanity and overextended metaphor all over the place.